A-level Physics · Black-body radiation

Wien's law

Use λmax T = 2.9 × 10⁻³ m K for a star's temperature, or the peak wavelength of a hot object.

0 correct out of 0Streak: 0

Question 1

The spectrum of a star has its peak at a wavelength of 756 nm. Assuming that the star radiates as a black body, calculate its surface temperature. Use Wien's law with the constant 2.9×10−32.9 \times 10^{-3} m K. Give your answer to 3 significant figures.

K

You can type 4.53, 3.2e-5, 3.2 × 10^-5 or 7/3.

Your progress is kept on this device only. Nothing you type is sent to us.

Stop spending Sunday on Monday's lesson.

Free to start, no card. Your first lesson is about two minutes away.

Start free